RoHS
IC=10mA, IB=0.5mA
IC=100mA,IB=5mA
0.83
1.05
VBE(sat)
V
V
Base-emitter saturation voltage
Base-emitter voltage
0.5
V
CE=5V, IC=0.1mA
CE=5V, IC=2mA
CE=5V, IC=100mA
VBE
0.55
0.62
0.83
100
120
140
V
0.7
V
V
CE=3V,IC=0.5mA,f=100MHz BC237
BC238
BC239
MHz
Transition frequency
fT
150
150
150
VCE=5V,IC=10mA,f=100MHz BC237
BC238
200
240
280
BC239
Cob
Cib
4.5
4
pF
Pf
Collector output capacitance
Emitter-base capacitance
V
CB=10V, IE=0, f=1MHz
8
VEB=0.5V, IC=0, f=1MHz
CE=5V, Ic=0.2mA,
V
f=1kHZ, Rs=2KΩ
BC239
2
NF
dB
Noise figure
VCE=5V, Ic=0.2mA,
10
10
4
f=1kHZ, Rs=2KΩ, ∆f=200Hz BC237
2
2
2
BC238
BC239
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